A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 6645-00-163-4624
NSN 5998-01-439-7272
NSN 5975-00-007-1925
NSN 5996-00-308-0994
NSN 5905-01-333-4928
NSN 5990-01-143-2518
NSN 6610-01-122-0064
NSN 6320-01-556-2011
NSN 6110-01-240-2180
NSN 6135-00-613-1068
NSN 6135-01-368-2785
NSN 6610-00-896-4914